body {
    margin: 0;
    background-color: #070720;
    /* fallback and solid area below */
    position: relative;
}

/* Overlay only covers the image area (with gradient) */
.backgroundOverlay {
    position: absolute;
    top: 60px;
    left: 200px;
    width: calc(100% - 200px);
    aspect-ratio: 1920 / 1080;
    /* or whatever ratio the image has */
    background-image:
        linear-gradient(to bottom, rgba(7, 7, 32, 0.3) 0%, rgba(7, 7, 32, 1) 100%),
        url('/imgs/yunara-lol-splash-art-hd-wallpaper-uhdpaper.com-434@5@g.jpg');
    background-repeat: no-repeat;
    background-position: top left;
    background-size: 100% auto;
    z-index: -1;
}